MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d73a10ae27cca6eb89bc5f6efb886f5969e79cb6cc6171c5187c48bdb3f7a7a. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


NetWire


Vendor detections: 6


Intelligence 6 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4d73a10ae27cca6eb89bc5f6efb886f5969e79cb6cc6171c5187c48bdb3f7a7a
SHA3-384 hash: 1f8f6cb6222a64a53babdd7c5b3c9d63e0e20fc9a5da673a68dbb54ef43424634ad0259b78ea09b40831a15054fe7215
SHA1 hash: 919cdce1bf1b66a977e5fb8b6b502d360ec68700
MD5 hash: 854315abbad5e081ebfcb062b594ff53
humanhash: pip-don-bulldog-louisiana
File name:PO_08312020.xls
Download: download sample
Signature NetWire
Create hunting rule
File size:435'712 bytes
First seen:2020-08-31 10:55:08 UTC
Last seen:2020-08-31 12:17:45 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:8xEtjPOtioVjDGUU1qfDlavx+W+LIfdAw9SBprUiL3TRwp+Aa78pvldTRNs8qIj8:n9SXVDap+lga8dAlIHzsW79OE+m9yO/C
TLSH AF94122630528AF7C52713B949E185F93B0FDD632B5747F72208B3A5DBB16E049C26CA
Reporter abuse_ch
Tags:NetWire nVpn RAT xls


Avatar
abuse_ch
Malspam distributing NetWire:

HELO: se2r-iad1.servconfig.com
Sending IP: 199.250.216.232
From: Cherry Ann <smtpfox-emx5i@highstreets.online>
Reply-To: Cherry Ann <jamesb080@vivaldi.net>
Subject: Request for Quotation
Attachment: PO_08312020.xls

NetWire payload URL:
http://diretso.com/vlcwn.exe

NetWire RAT C2:
pre08080.nsupdate.info:4770 (91.193.75.43)

Pointing to nVpn:

% Information related to '91.193.75.0 - 91.193.75.255'

% Abuse contact for '91.193.75.0 - 91.193.75.255' is 'abuse@kgb-vpn.org'

inetnum: 91.193.75.0 - 91.193.75.255
netname: NET-NINAZU
remarks: ------------------------------------------
remarks: * This network is used for a VPN service.
remarks: * No logs are stored in any shape or form.
remarks: ------------------------------------------
country: RU
admin-c: NVS100-RIPE
tech-c: NVS100-RIPE
abuse-c: NVS100-RIPE
mnt-by: NINAZU-MNT
mnt-by: RIPE-NCC-END-MNT
org: ORG-KHd1-RIPE
sponsoring-org: ORG-MW1-RIPE
status: ASSIGNED PI
created: 2012-06-04T11:05:55Z
last-modified: 2020-07-28T21:23:48Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
267
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.POWERSHELL.EXE.200327.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4HTTPSplitSoPhysical.202000615.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4Macro.HiddenSheetDLWAKEUP.20200310.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Launching a process by exploiting the app vulnerability
Result
Threat name:
Hidden Macro 4.0 NetWire
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/455290
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Connects to a URL shortener service
Contains functionality to steal Chrome passwords or cookies
Creates an undocumented autostart registry key
Document exploit detected (process start blacklist hit)
Drops PE files to the document folder of the user
Found Excel 4.0 Macro with suspicious formulas
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: NetWire
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected NetWire RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 280019 Sample: PO_08312020.xls Startdate: 31/08/2020 Architecture: WINDOWS Score: 100 50 Multi AV Scanner detection for dropped file 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->54 56 9 other signatures 2->56 9 EXCEL.EXE 37 37 2->9         started        process3 dnsIp4 42 192.168.2.1 unknown unknown 9->42 66 Obfuscated command line found 9->66 68 Document exploit detected (process start blacklist hit) 9->68 13 powershell.exe 15 22 9->13         started        signatures5 process6 dnsIp7 46 tinyurl.com 172.67.1.225, 443, 49721 CLOUDFLARENETUS United States 13->46 48 diretso.com 216.218.206.55, 49722, 80 CENTRALUTAHUS United States 13->48 34 C:\Users\user\Documents\test5.exe, PE32 13->34 dropped 70 Drops PE files to the document folder of the user 13->70 72 Powershell drops PE file 13->72 18 test5.exe 5 13->18         started        23 conhost.exe 13->23         started        file8 signatures9 process10 dnsIp11 36 time-a-g.nist.gov 129.6.15.28, 13, 49737 US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGYUS United States 18->36 38 nist1-ny.ustiming.org 103.224.212.219, 13, 49736 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 18->38 40 2 other IPs or domains 18->40 32 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 18->32 dropped 58 Multi AV Scanner detection for dropped file 18->58 60 Creates an undocumented autostart registry key 18->60 62 Machine Learning detection for dropped file 18->62 64 2 other signatures 18->64 25 test5.exe 2 18->25         started        28 powershell.exe 23 18->28         started        file12 signatures13 process14 dnsIp15 44 pre08080.nsupdate.info 91.193.75.43, 4770, 49738 DAVID_CRAIGGG Serbia 25->44 30 conhost.exe 28->30         started        process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4d73a10ae27cca6eb89bc5f6efb886f5969e79cb6cc6171c5187c48bdb3f7a7a/
Threat name:
Document-Excel.Downloader.Powdow
Create hunting rule
Status:
Malicious
First seen:
2020-08-31 05:16:54 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jvz2ccxcptfg5oe3yx3o7oeg6wlj46olntdbohcrq7cixwz7pj5a._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200831-16qneffxl2/
Behaviour
Suspicious Office macro
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4d73a10ae27cca6eb89bc5f6efb886f5969e79cb6cc6171c5187c48bdb3f7a7a

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:win_netwire_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

NetWire

Excel file xls 4d73a10ae27cca6eb89bc5f6efb886f5969e79cb6cc6171c5187c48bdb3f7a7a

(this sample)

NetWire

Executable exe 3ad19a02bb54043a60debfb2df478d11dc12e94c75b35ba9ba7cfa7694644962

  
URLhaus
https://urlhaus.abuse.ch/url/447346/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 3ad19a02bb54043a60debfb2df478d11dc12e94c75b35ba9ba7cfa7694644962
  
Dropping
MD5 11a79111b35f0977b642d37a1ebb36c0

Comments